39 lines
2.3 KiB
Plaintext
39 lines
2.3 KiB
Plaintext
---
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title: eigensolvers
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description: API reference for qiskit.algorithms.eigensolvers
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in_page_toc_min_heading_level: 2
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python_api_type: module
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python_api_name: qiskit.algorithms.eigensolvers
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---
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<span id="module-qiskit.algorithms.eigensolvers" />
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<span id="qiskit-algorithms-eigensolvers" />
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# qiskit.algorithms.eigensolvers
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<span id="eigensolvers-package-qiskit-algorithms-eigensolvers" />
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## Eigensolvers Package
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<span id="module-qiskit.algorithms.eigensolvers" />
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`qiskit.algorithms.eigensolvers`
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### Eigensolvers
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| ------------------------------------------------------------------------------------------------------------------------------------------------ | -------------------------------------------- |
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| [`Eigensolver`](qiskit.algorithms.eigensolvers.Eigensolver "qiskit.algorithms.eigensolvers.Eigensolver")() | The eigensolver interface. |
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| [`NumPyEigensolver`](qiskit.algorithms.eigensolvers.NumPyEigensolver "qiskit.algorithms.eigensolvers.NumPyEigensolver")(\[k, filter\_criterion]) | The NumPy eigensolver algorithm. |
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| [`VQD`](qiskit.algorithms.eigensolvers.VQD "qiskit.algorithms.eigensolvers.VQD")(estimator, fidelity, ansatz, optimizer, \*) | The Variational Quantum Deflation algorithm. |
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### Results
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> | | |
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> | ------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------- |
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> | [`EigensolverResult`](qiskit.algorithms.eigensolvers.EigensolverResult "qiskit.algorithms.eigensolvers.EigensolverResult")() | Eigensolver result. |
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> | [`NumPyEigensolverResult`](qiskit.algorithms.eigensolvers.NumPyEigensolverResult "qiskit.algorithms.eigensolvers.NumPyEigensolverResult")() | NumPy eigensolver result. |
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> | [`VQDResult`](qiskit.algorithms.eigensolvers.VQDResult "qiskit.algorithms.eigensolvers.VQDResult")() | VQD Result. |
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